There's a tea enjoyed and used for ceremonial purposes by indigenous Americans for centuries, maybe even millennia, before coffee ever came to this continent, brewed from the leaves of a plant called the yaupon holly. 

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For generations, the Khoisan people harvested the rooibos plant to make tea. As this caffeine-free drink has grown trendy — 9,000 tons exported a year — they've been cut out of revenues. Until now.